#645BB2#645BB2
#645BB2 is a mid, vivid blue. Relative luminance 0.134; OKLCH L 52.2% C 0.133 H 285.5°. Best body text is #FFFFFF at 5.70:1 contrast (WCAG AA passes).
Color values
| HEX | #645BB2 |
|---|---|
| RGB | rgb(100, 91, 178) |
| HSL | hsl(246, 36%, 53%) |
| HSV | hsv(246, 49%, 70%) |
| CMYK | cmyk(43.8%, 48.9%, 0%, 30.2%) |
| CIE-LAB | lab(43.37, 25.99, -45.28) |
| CIE-LCH | lch(43.37, 52.21, 299.85°) |
| OKLab | oklab(52.22% 0.0357 -0.1284) |
| OKLCH | oklch(52.22% 0.133 285.5) |
| XYZ | xyz(17.0302, 13.4052, 43.8010) |
| Luminance | 0.1341 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Iris
#6258C4
ΔE00 3.21
Slate Blue
#6A5ACD
ΔE00 4.42
Light Indigo
#6D5ACF
ΔE00 4.84
Dark Periwinkle
#665FD1
ΔE00 5.01
Royal Purple
#7851A9
ΔE00 6.43
Warm Blue
#4B57DB
ΔE00 7.29
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#645BB2 #A9B25B
analogous
#5B7DB2 #645BB2 #905BB2
triadic
#645BB2 #B2645B #5BB264
tetradic
#645BB2 #B25B7D #A9B25B #5BB290
square
#645BB2 #B25B7D #A9B25B #5BB290
split-complementary
#645BB2 #B2905B #7DB25B
monochromatic
#342F64 #4A428D #645BB2 #8B85C6 #B3AED9
Accessibility & contrast
On white
5.70
#645BB2 on #FFFFFF
AA ✓AA large ✓AAA ✗
On black
3.68
#645BB2 on #000000
AA ✗AA large ✓AAA ✗
Best text color
#FFFFFF on #645BB2
5.70:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##645BB2 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##645BB2 | 1.00 | 5.70 | 3.68 | 5.70 |
| #FFFFFF | 5.70 | 1.00 | 21.00 | 1.00 |
| #000000 | 3.68 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 5.70 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#3769B5
Deuteranopia (green-blind)
#3564B0
Tritanopia (blue-blind)
#4C6D7E
Achromatopsia (no color)
#666666
Design tokens & code
CSS
--color: #645bb2; /* rgb */ color: rgb(100, 91, 178); /* oklch */ color: oklch(52.2% 0.133 285.5);
Tailwind
colors: {
custom: {
50: '#9489c9',
500: '#645bb2',
950: '#000000',
},
}SCSS
$custom: #645bb2; $custom-light: #9489c9; $custom-dark: #000000;
JSON
{
"hex": "#645bb2",
"rgb": {
"r": 100,
"g": 91,
"b": 178
},
"hsl": {
"h": 246.207,
"s": 36.1,
"l": 52.745
},
"oklch": {
"l": 0.52216,
"c": 0.13329,
"h": 285.5
},
"luminance": 0.13406
}Semantic roles & 50–950 ramp
primary
#645BB2
secondary
#C3C7A2
accent
#CC5CC0
background
#F9F8FC
surface
#F2F0F8
border
#CCCBD1
text
#0E0B13
muted
#7E7C82